Disclosed herein is a terminal configured to receive information about one or more periodic uplink resources for transmission of HARQ-ACK information for multicast data, monitor a PDCCH in a search space for multicast configured on a specific downlink frequency resource, and detect DCI having a CRC scrambled with a G-RNTI. On a basis that the DCI indicates a specific index, and at least one of the one or more periodic uplink resources is associated with the specific index indicated by the DCI, the terminal may transmit an activation confirmation message to activate the at least one periodic uplink resource associated with the specific index.
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2. The method of claim 1, wherein the HARQ-ACK information for the multicast data is transmitted after the activation of the first periodic UL resource.
In wireless communication systems, particularly in 5G and beyond, efficient transmission of hybrid automatic repeat request acknowledgment (HARQ-ACK) information for multicast data is critical for reliable group communication. A challenge arises in coordinating the timing of HARQ-ACK transmissions with uplink (UL) resources, especially when these resources are periodically allocated. This invention addresses this issue by specifying a method where HARQ-ACK information for multicast data is transmitted only after the activation of a first periodic UL resource. The periodic UL resource is a preconfigured time-frequency allocation that repeats at regular intervals, allowing devices to transmit acknowledgments without explicit scheduling for each transmission. The activation of this resource ensures that the HARQ-ACK information is sent at a predictable and synchronized time, reducing signaling overhead and improving efficiency. The method ensures that acknowledgments are transmitted in a structured manner, minimizing collisions and improving overall system performance. This approach is particularly useful in scenarios where multiple devices need to acknowledge multicast data transmissions, such as in broadcast services, group communications, or emergency alerts. By aligning HARQ-ACK transmissions with the periodic UL resource, the system avoids unnecessary signaling and ensures timely feedback, enhancing reliability and efficiency in multicast communications.
3. The method of claim 1, wherein the message is transmitted during a timer for uplink timing of the terminal is valid.
A method for wireless communication involves transmitting a message from a terminal to a base station during a valid uplink timing timer period. The uplink timing timer is used to maintain synchronization between the terminal and the base station, ensuring that uplink transmissions are properly aligned with the base station's reception window. The method addresses the challenge of ensuring reliable message delivery while minimizing unnecessary signaling overhead. By transmitting the message only when the uplink timing timer is active, the terminal avoids potential synchronization issues that could lead to transmission failures or wasted resources. This approach optimizes network efficiency by reducing the need for frequent timing adjustments and re-synchronization procedures. The method is particularly useful in scenarios where the terminal's mobility or environmental conditions may cause timing drift, such as in high-speed mobility or dense network deployments. The solution ensures that critical messages, such as control signaling or data packets, are transmitted at the correct time, improving overall communication reliability and reducing latency. The technique is applicable to various wireless communication standards, including 5G and beyond, where precise timing synchronization is essential for efficient operation.
4. The method of claim 3, wherein transmission of the message is not allowed after the timer for uplink timing of the terminal expires.
A method for managing message transmission in a wireless communication system addresses the problem of inefficient resource usage and potential interference when a terminal attempts to send messages after its uplink timing synchronization has expired. The method involves monitoring a timer associated with the terminal's uplink timing synchronization. If the timer expires, indicating that the terminal is no longer synchronized with the network, the system prevents the transmission of any pending messages from the terminal. This ensures that unsynchronized terminals do not disrupt network operations by transmitting out-of-sync signals. The method may also include additional steps such as detecting the expiration of the timer and blocking the message transmission in response. By enforcing this restriction, the system maintains proper timing alignment, reduces interference, and optimizes network performance. The approach is particularly useful in scenarios where terminals may lose synchronization due to mobility, signal degradation, or other factors, ensuring reliable and orderly communication within the network.
5. The method of claim 1, wherein the specific downlink frequency resource is related to an active bandwidth part (BWP) of the terminal.
This invention relates to wireless communication systems, specifically methods for managing downlink frequency resources in a terminal device. The problem addressed is the efficient allocation and utilization of downlink frequency resources, particularly in scenarios involving multiple bandwidth parts (BWPs) in a terminal. The method involves determining a specific downlink frequency resource for a terminal device, where the resource is associated with an active bandwidth part (BWP) of the terminal. The active BWP is a configured subset of the overall system bandwidth that the terminal is currently using for communication. By linking the downlink frequency resource to the active BWP, the system ensures that the resource allocation aligns with the terminal's operational state, improving efficiency and reducing interference. The method may also include steps such as receiving a downlink control signal, decoding the signal to identify the downlink frequency resource, and then using the resource for data transmission. The downlink control signal may include scheduling information that specifies the resource allocation. The terminal monitors the downlink control channel to detect such signals and adjusts its reception accordingly. Additionally, the method may involve handling multiple BWPs, where the terminal switches between BWPs based on system requirements or terminal capabilities. The downlink frequency resource is dynamically adjusted to match the active BWP, ensuring seamless communication. This approach optimizes resource utilization and minimizes overhead in wireless networks.
6. The method of claim 1, wherein the message is transmitted as at least part of uplink control information (UCI).
A method for wireless communication involves transmitting a message as part of uplink control information (UCI) in a wireless network. The message is generated by a user equipment (UE) and includes information related to channel state feedback, hybrid automatic repeat request (HARQ) acknowledgment, or scheduling requests. The transmission occurs over a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) in a cellular network, such as 5G or LTE. The message may be encoded using a predefined format or modulation scheme to ensure reliable delivery. The method optimizes resource utilization by embedding the message within UCI, reducing the need for additional signaling overhead. This approach enhances efficiency in wireless communication by leveraging existing control channels for additional data transmission, improving spectral efficiency and reducing latency. The technique is particularly useful in scenarios where timely feedback or control information is critical, such as in high-mobility environments or dense network deployments.
7. The method of claim 6, wherein the UCI is transmitted on a physical uplink shared channel (PUSCH).
This invention relates to wireless communication systems, specifically improving the transmission of uplink control information (UCI) in scenarios where data is also being transmitted. The problem addressed is the efficient and reliable transmission of UCI, such as acknowledgments (ACK/NACK) or channel state information (CSI), when sharing the same physical uplink channel used for data transmission. Traditional methods may suffer from inefficiencies or reliability issues when UCI and data compete for the same resources. The invention describes a method where UCI is transmitted on a physical uplink shared channel (PUSCH), which is primarily used for uplink data transmission. This approach allows UCI to be multiplexed with data, reducing the need for dedicated control channels and improving resource utilization. The method ensures that UCI is prioritized or protected within the PUSCH transmission to maintain reliability. Techniques may include reserving specific resource elements within the PUSCH for UCI, using modulation and coding schemes optimized for control information, or employing error detection and correction mechanisms tailored for UCI. The invention may also involve dynamic allocation or pre-configuration of resources to balance UCI and data transmission needs. This method is particularly useful in high-data-rate scenarios where efficient use of uplink resources is critical.
8. A non-transitory medium readable by a processor and storing instructions that, when executed by the processor, cause the processor to perform the method of claim 1.
A system and method for processing data involves a non-transitory computer-readable medium storing executable instructions that, when run by a processor, perform a series of operations. The method includes receiving input data, analyzing the data to identify relevant features, and generating an output based on the analysis. The analysis may involve applying one or more algorithms to extract patterns or relationships within the data. The output can be used for decision-making, prediction, or further processing. The system may also include additional steps such as preprocessing the input data to remove noise or irrelevant information, validating the results of the analysis, and storing the output for future reference. The instructions stored on the medium ensure that the processor executes these steps in a controlled and reproducible manner, improving the reliability and accuracy of the data processing tasks. This approach is particularly useful in applications requiring automated data analysis, such as machine learning, data mining, or real-time monitoring systems. The non-transitory medium ensures that the instructions are persistently stored and can be accessed by the processor as needed.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
August 6, 2021
April 23, 2024
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